The official PCB for HeiChips 2025
Note
This repository is currently a placeholder and will be populated before the chips come back.
General ideas:
- Create a daughterboard that houses the chip similar to the Tiny Tapeout Demo Board
- 5V to 3.3V and 1.5V
- Add RP2350 to the PCB
- Clock generation
- Can upload the bitstream via USB
- Needs dedicated QSPI flash
- Oscillator
- USB socket
- Reset signal
- Jumper selects between a button, the FPGA busy signal from the chip, or a pin from the RP2350.
- USB connector on dedicated pins of the chip
- HDMI connector on dedicated pins of the chip
- Ethernet connector (additional chips needed?)
- Pmod connectors (Tiny VGA, Audio Pmod, could plugin the QSPI Pmod from Tiny Tapeout for FazyRV?)
- ...
We are quite flexible with the pinout, as the eFPGA can be reconfigured.